VectorSpace instances for MSFs that produce vector spaces. This allows you to use vector operators with MSFs that output vectors, for example, you can write:

msf1 :: MSF Input (Double, Double) -- defined however you want
msf2 :: MSF Input (Double, Double) -- defined however you want
msf3 :: MSF Input (Double, Double)
msf3 = msf1 ^+^ msf2

instead of

msf3 = (msf1 &&& msf2) >>> arr (uncurry (^+^))

Instances are provided for the type classes RModule and VectorSpace.